If I understand you correctly, this is a common situation for HYPers. There is no need to constantly seek new companies provided your portfolio is sufficiently diversified, which it must be if you followed one of my TDL HYPs. Just reinvest the dividend cash in topping up your existing holdings once it has accumulated to an economic amount having regard to costs, sticking only to those shown as Buys in TDL at the time you are doing this.
My recommended procedure for this is to work your way through your portfolio, investing the same amount in each share/sector where still a Buy at that stage. After having topped up every qualifying share/sector in this way, repeat indefinitely. Reinvesting dividends will have the very beneficial effect of boosting the eventual income when the time comes.
Hope this helps.
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